This Kase 90mm Magnetic Circular Polarizer Filter?is compatible with a Kase K9 100mm Filter Holder. It helps to reduce reflections and glare by filtering out light that has become polarized due to reflection from a non-metallic surface. The light from the sun naturally becomes partially polarized due to reflecting off electrons in air molecules, causing the light to scatter into what appears as haze. A polarizing filter arranges and filters this directionally polarized light perpendicularly to the reflected light, allowing for the absorption of much of this light. This results in a noticeable reduction of glare and reflections from non-metallic surfaces and an increase in the saturation of skies and foliage.





A circular polarizer only differs from a linear polarizer in that it contains a quarter wave plane in addition to the linear polarizing filter. The addition of this quarter wave plane is to circularly polarize the linearly polarized light for the use of auto focus and exposure functions. Due to how the light is broken down and filtered with a linear polarizer, auto focus and exposure accuracy become skewed during use. When the light becomes circularly polarized, it permits the use of these functions.





Mounted within a non-threaded, steel filter ring, this filter is made specifically to fit within a separately available Kase 90mm Magnetic Lens Adapter Ring behind a Kase K9 100mm Filter Holder. Constructed from Schott B270 Superwhite glass for enhanced clarity and color fidelity, each glass surface includes multiple layers of anti-reflection coatings to prevent internal ghosting and reflections. These coatings also offer greater protection to the filter substrate and help it to stay clean for longer than with uncoated filters.This 90mm Neutral Night Magnetic Filter from Kase is a light pollution reduction filter specifically designed to fit the Kase K9 holder. It blocks out sky glow without changing the entire color spectrum of the scene. Crafted from optical glass, this is a multi-coated, magnetic, and unthreaded filter that is waterproof and easy to clean.This 100 x 100mm Kase Wolverine Slim Solid Neutral Density Filter is compatible with a Kase 100mm Filter Holder or other filter holders that can accommodate 100mm wide, 1.1mm thick filters. Its 0.9 density creates a darkening of the entire image, allowing you to photograph with a wider aperture or slower shutter speed without overexposing yur image. By increasing your aperture or slowing your exposure time, you can control depth of field and convey movement more easily. Neutral density filters do not affect the coloration of the image and are ideal for pairing with other filters.





Kase Wolverine filters are constructed from tempered, optical glass for shock resistance. To prevent internal ghosting and reflections, while further enhancing clarity and color fidelity, each glass surface includes multiple layers of anti-reflection coatings. These coatings also offer greater protection to the filter substrate and help it to stay clean for longer than with uncoated filters.





This 1.1mm thick solid neutral density filter is designed to be 43% lighter and 45% thinner than a 100 x 100mm Kase solid neutral density filter that is 2mm thick. This slim design can help prevent vignetting when used in a compatible filter holder along with one or two other 1.1mm thick filters. A padded pouch is included for storage and transport.This 100 x 100mm Kase Wolverine Slim Solid Neutral Density Filter is compatible with a Kase 100mm Filter Holder or other filter holders that can accommodate 100mm wide, 1.1mm thick filters. Its 1.8 density creates a darkening of the entire image, allowing you to photograph with a wider aperture or slower shutter speed without overexposing yur image. By increasing your aperture or slowing your exposure time, you can control depth of field and convey movement more easily. Neutral density filters do not affect the coloration of the image and are ideal for pairing with other filters.





Kase Wolverine filters are constructed from tempered, optical glass for shock resistance. To prevent internal ghosting and reflections, while further enhancing clarity and color fidelity, each glass surface includes multiple layers of anti-reflection coatings. These coatings also offer greater protection to the filter substrate and help it to stay clean for longer than with uncoated filters.





This 1.1mm thick solid neutral density filter is designed to be 43% lighter and 45% thinner than a 100 x 100mm Kase solid neutral density filter that is 2mm thick. This slim design can help prevent vignetting when used in a compatible filter holder along with one or two other 1.1mm thick filters. A padded pouch is included for storage and transport.This 100 x 100mm Kase Wolverine Slim Solid Neutral Density Filter is compatible with a Kase 100mm Filter Holder or other filter holders that can accommodate 100mm wide, 1.1mm thick filters. Its 3.0 density creates a darkening of the entire image, allowing you to photograph with a wider aperture or slower shutter speed without overexposing yur image. By increasing your aperture or slowing your exposure time, you can control depth of field and convey movement more easily. Neutral density filters do not affect the coloration of the image and are ideal for pairing with other filters.





Kase Wolverine filters are constructed from tempered, optical glass for shock resistance. To prevent internal ghosting and reflections, while further enhancing clarity and color fidelity, each glass surface includes multiple layers of anti-reflection coatings. These coatings also offer greater protection to the filter substrate and help it to stay clean for longer than with uncoated filters.





This 1.1mm thick solid neutral density filter is designed to be 43% lighter and 45% thinner than a 100 x 100mm Kase solid neutral density filter that is 2mm thick. This slim design can help prevent vignetting when used in a compatible filter holder along with one or two other 1.1mm thick filters. A padded pouch is included for storage and transport.The Magnetic Lens Cap for K9 100mm Filter Holder is a lightweight all-metal cap that attaches magnetically to the front of the K9 100mm filter holder from Kase. It's made of aluminum and steel.